FTTH Active vs Passive
Mikael Abrahamsson
swmike at swm.pp.se
Tue Dec 1 17:59:46 UTC 2009
On Tue, 1 Dec 2009, Dan White wrote:
> However, there are some advantages to GPON - particularly if you're
> deploying high bandwidth video services. PON ONTs share 2.4Gb/s of
> bandwidth downstream, which means you can support more than a gig of video
> on each PON, if deploying in dense mode.
You don't need to supply more than a gig per household, so active gige (or
100meg) is enough to feed the household with their broadcast video needs.
So yes, you will need 10GE to the node and 100/1000 to each household do
this this kind of video.
PON only makes sense with low take-rates and high per-truckroll costs when
I did the business case last time.
> Another big advantage is in CO equipment. A 4-PON blade in a cabinet is
> going to support on the order of 256 ONTs.
But you lose out on the CPEs, at least historically these were much more
expensive than the 100FX/TX media converters available in the market.
--
Mikael Abrahamsson email: swmike at swm.pp.se
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